Menstrual Cycle Calculator & Calendar: Calculate Your Next Period, Ovulation & Due Date
Medically Reviewed by Dr Anique Ali Last updated: November 23, 2019
Use this menstrual cycle calculator to calculate your next menstrual period, fertile period and due date. To give you an estimate please provide the following information:
Menstrual Cycle Calculator & Calendar: Calculate Your Next Period, Ovulation & Due Date
About The Author
Daniella Hall
Mom to an amazing and crazy toddler, Aaron, with a passion for women’s health and wellness. One the side she also loves being outdoors, baking and creating cooking videos with Aaron
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Hi. I had my period on Feb 25, and my husband and I are using withdrawal method every time we’re having sex. But until now I haven’t had my period. I’m experiencing nausea and breast tenderness. I haven’t tried to do a pregnancy test yet because of my work. Is it possible that I’m pregnant? On what rate? My period is regular.
I got the Mirena Coil out Oct 20th 2015, My only menstrual cycle since then began on the 29/12/15, I’ve done loads of pregnancy tests and its always Negative!I really want to get pregnant but can’t judge when my next Period is due or how long my cycle is in order to figure out my fertile days!What can I do?
Hi Annie, the best way to do that is to write down the date of first day of your period every month. This is very important to make a guess for the next fertile days. After a few months, you may see a pattern there. Till then, whenever you have your period, try having intercourse after 14-16 days of your first day of period. Also, you can use ovulation kit.
Thank you Emily.
Hi I had my last period February 26,2016 I did not get my period in March. We are in April and i already had 3 test done and my results are negative. What can be wrong?
Hi Yadi, late periods can be because of many reasons like pregnancy, or a sudden change n exercise or diet, or a new medicine or just because of hormonal changes. Do you always get regular period otherwise?
My marriage was on Feb 25-2016. Sex started on march 1st 2016. My last period was 19-02-2016. My period has not come till now. When should I take a pregnancy test?
Hi Swarupa, If you have not got your period by now, please take a test. ATB!
my 1st day of my last period was March.17.2016-March 21.2016..
When would my fertile window be?
my period start Feb 27 and finished march 3. we had sex march 23. I am taking pills as contraceptive.and he uses withdrawal.y is it up to now I’m not yet having my period.? pls help.thanks
Hi, sometimes pills may delay the period. If you have not missed any pills then pregnancy should not be the case. Periods should come in another 1-2 days. Are you experiencing anything unusual too?
BTW withdrawal sex too can result in pregnancy. So protection (condom or pills) should be used always until you are trying to get pregnant.
I had my period on the four of march end the 11 of march I had sex on the 14 and 15 of march and I was ovulating on the 18 march could I be pregnant
Hi Jemma, if it was unprotected sex, yes there are chances of pregnancy.
Hello ma my name is Grace pls my period startedon the 16th and stop on the 19th and I have sex wit my guy on the 29th and am a virgin am I pregnant and when is my free period to have sex without getting pregnant thanks
Hi Grace, I didn’t understand. Did you not had penetration sex and that’s why you are saying that you are a virgin?
About free period, Grace, there is never a free period to have unprotected sex without getting pregnant. Always use protection like condom. The least chances to get pregnant are immediately after your period, but even then, use a condom. Because unprotected sex on any day, including during your period, can result in a pregnancy. All the best!
I got my period on Feb 28 and finished on the 4th of March. I’ve been unprotected sex and have sex atleast 2-3 times a week. Its 4/1 and i still have not receive my period yet.
Hi Ellaine, It’s been 38 days which is not a very big number. Are you experiencing any other unusual symptoms too? Late period can be because of many reasons such as pregnancy, heavy exercise and even a sudden change in diet.
Hi Emily,
Well, lately I’ve been really tired and can be picky with food. I haven’t been working out. Only sometimes when I have time. It’s April 4 and until now I still haven’t gotten my period. I did took a pregnancy test on Friday 4/1 but it says it’s negative.
Hi my period started on 22March 2016 and ended on 25march 2016 want to get pregnant when is the right time
hi started my period 19th march, took ovulation test 30th, 31 and today, 31st was a def postive but 30th and today was dark lines also, when is my most fertile dates?
Hi, as per the information, the best dates are 31st Feb and 3rd April. All the best!
Hi, I got married in Jan 2015, I’ve had unprotected sex until now, but my menses haven’t been delayed since then, it always comes at the expected date. Please what does that mean? I really want to get pregnant.
My last period was on February 16, 2016. I have not had my period since than. My period cycle is 33 days. I had sex on March 13,2016. I’m I pregnant?
Zoe there might be many reasons for a late/missing period. Have you feeling any kind of changes, any unusual symptoms? Also, was it unprotected sex?
I started my period on 5th of March and ended on d 7th of March. ………. I had sex on d 20th of March and I still haven’t seen my period. But I feel menstrual cramps. Is it possible I am pregnant? ?
Hi Kay, Cramps may be due to reasons other than pregnancy too. What is the number of days in your period cycle?
My period started on the 29th of February 2016 and finished on the 4th of March. I had sex on the 20th. My cycle is 28 days and my period hasn’t come as yet. Could I be pregnant?
You may not be pregnant since you were fertile from March 12 to 16. You were not ovulating on March 20th.
I started my period on March 18th. It ended on the 25th. My ovulation calendar says I would be fertile from the 26th until the 31st. On the 29th I noticed pinkishly red blood when wiping, but not enough to generate in the toilet. I took an opk on the 30th and it was positive. Can you please explain what this is?
If your opk test is positive it means that ovulation is likely to within 24-72 hours after you took the test.